公开(公告)号：US3816119A

公开(公告)日：1974-06-11

申请号：US20248271

申请日：1971-11-26

Applicant: POLAROID CORP

Inventor： BILOFSKY R ,  CRAMER R

IPC: G03C8/48 ,  G03C1/40 ,  G03C1/84 ,  G03C5/30 ,  G03C5/54

CPC classification number: G03C8/48

Abstract: WHEREIN R is an aryl group and an o-carboxy-benzoyl radical, not more than one of said substituents being o-carboxybenzoyl.

This invention relates to a new class of indicator dyes useful as optical filter agents in photographic processes to protect a selectively exposed photosensitive material from further exposure during processing in the presence of incident light. Such dyes comprise 3,6-disubstituted carbazoles wherein the 3,6 substituents are selected from a phthalidyl radical,

Abstract translation: 本发明涉及一种新型的指示剂染料，其可用作照相工艺中的光学过滤剂，以在入射光的存在下保护选择性曝光的感光材料免于进一步曝光。 这样的染料包括3,6-二取代的咔唑，其中3,6个取代基选自酞基，WHEREIN R是芳基和邻羧基 - 苯甲酰基，所述取代基中不超过一个是邻羧基苯甲酰基。

公开(公告)号：US3856521A

公开(公告)日：1974-12-24

申请号：US24702272

申请日：1972-04-24

Applicant: POLAROID CORP

Inventor： BILOFSKY R ,  ROGERS H

IPC: G03C8/48 ,  G03C8/00 ,  G03C8/36 ,  G03C7/00 ,  G03C1/40 ,  G03C1/48 ,  G03C1/84 ,  G03C5/54

CPC classification number: G03C8/00

Abstract: Diffusion transfer color processes are described for providing integral negative-positive reflection prints. Discoloration of the ''''whites'''' or highlights of such integral negative-positive reflection prints is minimized by performing the process in the presence of a metal chelating or complexing agent effective to form a less colored and more stable metal chelate than any other reagent present.

Abstract translation: 描述扩散转移色彩处理以提供积分的负 - 正反射印刷。 通过在存在金属螯合剂或络合剂的情况下进行该方法，使得这种整体负正反射印刷品的“白色”或亮点的变色被最小化，所述金属螯合剂或络合剂有效形成比所存在的任何其它试剂更少着色和更稳定的金属螯合物。